R devel - Sep 2017 - R-devel object header changes that require reinstalling packages

For anyone using the development version of R:

svn revision 73243 introduces some changes to the memory layout of R
objects that require reinstalling packages using compiled
code. Attempting to load incompatible packages should signal an
error. These changes are to support a new extension framework for
basic R objects
(https://svn.r-project.org/R/branches/ALTREP/ALTREP.html outlines the
framework).  Merging the remainder of the framework should not
introduce more binary changes and is expected to occur in the next few
months.

Best,

luke

-- 
Luke Tierney
Ralph E. Wareham Professor of Mathematical Sciences
University of Iowa                  Phone:             319-335-3386
Department of Statistics and        Fax:               319-335-3017
    Actuarial Science
241 Schaeffer Hall                  email:   luke-tierney at uiowa.edu
Iowa City, IA 52242                 WWW:  http://www.stat.uiowa.edu

On Tue, Sep 12, 2017 at 8:28 PM,  <luke-tierney at uiowa.edu>
wrote:
> (https://svn.r-project.org/R/branches/ALTREP/ALTREP.html outlines the
> framework).
Thank you for the nice writeup, hope this makes it into the R journal.
The spelling package finds a few typos:
> spelling::spell_check_files('ALTREP.md', lang = 'en_US')
  WORD              FOUND IN
abstrct           altrep.md:39
attemps           altrep.md:776
defern            altrep.md:767
hanling           altrep.md:699
representaitons   altrep.md:21

 (omitting false positives)